How many letters does the top answer for “to wash (ore) in a box or jig.” have?

The most common answer is hutch (5 letters).

Crossword clue: to wash (ore) in a box or jig.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

hutch 5 letters web-def

small crude shelter used as a dwelling